Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=true, so the safety profile is covered by structured data. The description adds nothing on top of that — no note on auth requirements, whether a report can expire, or why a read is flagged non-idempotent.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

A single front-loaded sentence with zero filler — appropriately sized for a simple lookup. It is efficient but too sparse to earn a 5, since brevity here edges toward under-specification rather than tight structure.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a two-required-parameter read tool with full schema coverage and no output schema, the description is minimally sufficient. It still omits where report_id comes from, how it relates to list_reports/generate_report, and what a missing or expired report returns.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, including a clear explanation of the detail verbosity toggle, so the schema carries the parameter burden. The description adds no syntax, format, or ID-sourcing detail beyond what the schema already states, which is the expected baseline of 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description gives a clear verb+resource ("Get ... report") and scopes it to previously generated business reports, which implicitly separates it from generate_report and list_reports. However, it never names or contrasts those siblings, so the distinction must be inferred from the surrounding tool list.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no explicit when-to-use guidance, no prerequisites, and no pointer to alternatives such as list_reports or generate_report. "Previously generated" faintly implies the report must already exist, but that is inference rather than instruction.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.